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SN74CB3Q3257: Dynamic characteristics and hot insertion of the IC

Prince Gola
Prodigy 20 points
Part Number: SN74CB3Q3257
Other Parts Discussed in Thread: TMUX1574

Can you please share the details of channel to channel crosstalk, off isolation and -3dB bandwidth of the IC (SN74CB3Q3257DBQR).

Maximum voltage and current rating for hot insertion for this IC. Like for much time it can withstands the hot insertion. 

  • 0
    TI__Mastermind 24440 points

    Hello Prince

    1.If you are looking for graph information about the AC specs you are referring I would actually recommended you look into using the TMUX1574 as a p2p replacement.( It has more detailed info on the dynamic characteristics

    2. For both the 3257 and 1574 while they can support hot insertion TI cannot guarantee its performance longevity in this scenario.

    Abs max and current ratings can also be found on the datasheet!

    Please let me know if you need any further assistance

    Regards,

    Kameron

  • 0 in reply to Kameron Hill
    Prodigy 20 points

    Hi Kameron,

    1. Is the crosstalk, off isolation and bandwidth is same in both ICs. i.e. 3257 and 1547.

    2. For hot insertion I want to know what is minimum amount of time that IC can handle the hot insertion.

    Regards,

    Prince

  • 0 in reply to Prince Gola
    TI__Mastermind 24440 points

    Hello Prince,

    1. So the bandwidth for the TMUX1574 is actually greater than the 3257 device. The reason why i suggest using the 1574 is because it has information about off iso and crosstalk. The 3257 device doesn't have that on its data sheet.

    In general you should see better performance with those specs with the 1574.

    2.Ok I understand, so both devices should survive the hot insertion event indefinitely as long as the signal voltage during the event does not exceed the recommend input voltage for these devices.( recommended operating conditions of the datasheet .

    Please let me know if you need any further assistance.

    Regards,

    Kameron